CN101579192B - Healthy energy-saving water dispenser - Google Patents

Abstract

The invention discloses a healthy energy-saving water dispenser, which has the aims of health and energy conservation, carries out reconstruction of a water dispenser and design of control logic basedon a programmable logic device, is designed for users of households and offices, and adopts various technology to furthest meet the requirements of different users. The water dispenser comprises thre e water tanks orderly connected in series, pipes connected with the three water tanks, and controllers, wherein the first water tank (1) is a water inlet end and is used for accommodating raw water which is not heated; the second water tank (2) is used for boiling water, directly boils the raw water injected into the water tank during use, cuts off a power supply after the raw water is boiled and waits for next injected water; the third water tank (3) is provided with a water outlet, has the function of heat insulation, is provided with a multi-shift adjustable water temperature controller, ispumped with the boiled water when the water level is not full, and is used for meeting the requirements of users on different water temperatures; a transmission controller for water from a cold water area to a boiled water area is a micro diving pump, and a transmission controller for the water from the boiled water area to a warm water area is an electromagnetic valve; and the controllers automa tically control the work of the whole water dispenser.

Description

Health energy-saving drinking water machine

Technical field

The present invention is to be target with the health energy-saving, carries out the design with control logic of rebuilding of water dispenser based on PLD (CPLD, Complex Programmable LogicDevice).This product aims at user's design of family and office, adopts multiple technologies to satisfy different users's demand to greatest extent, has practical value.

Background technology

At present, mainly there are two aspect problems in the water dispenser that most of families and office use: the one, can not regulate water temperature, and there is not heat insulation function.The user can only obtain 100 ℃ boiling water at every turn, and the warm water of wanting to obtain drinking must oneself try every possible means to cool off, and uses extremely inconvenient; The 2nd, there is the problem of " thousand boiling water ".For guaranteeing that the user can obtain boiling water at any time, common water dispenser is boiled repeatedly with part water.Boiled for a long time or repeatedly in the boil water involatile substance such as heavy metal composition such as calcium, magnesium and content of nitrite very high, this water of drink can disturb people's gastrointestinal function for a long time, cause the body anoxic, situations such as dizzy, headache, nervous, uncomfortable in chest, nauseating, vomiting, stomachache, diarrhoea occur.

Find that through sample investigation the water temperature demand of most of people's drinking-water is between 30 ~ 80 ℃.In addition, find that through certain market survey and data investigation the boiling water water temperature that brews tea or coffee and so on beverage is the best with 80 ℃.Comprehensive above-mentioned situation, the water dispenser of the present invention's design is only once boiled with water, separates the health problem that " thousand boiling water " brings; And increased heat insulation function, and the holding temperature scope can be set at 30 ~ 80 ℃, and stepping is 5 ℃, solves the demand of different crowd to the drinking water water temperature; Has the demand of forcing heating mode to satisfy user's infusion teas and coffee simultaneously.

Under the healthy and energy-conservation situation that becomes themes of the times, the present invention adopts a series of technical measures, has realized the health energy-saving of all many-sides of water dispenser.

Summary of the invention

Technical problem: the health energy-saving drinking water machine of the present invention's design is paid close attention to healthy, energy-conservation this two principal themes, has solved " thousand boiling water " and the user problem to drinking water water temperature differentiated demand.

Technical scheme: the health energy-saving drinking water machine of the present invention's design comprises the water tank and pipeline that is connected these three water tanks and controller that three orders are connected in series; Wherein, first water tank is a water inlet end, is used to adorn the unboiled water that did not burn; Second water tank is used to boil water, and the unboiled water that directly will inject water tank in the use is boiled, and next water filling is waited for regard to deenergization in boiled back; Three-tank is provided with delivery port, and heat insulation function is arranged, and has many grades of adjustable water-saving temp control system devices, with regard to the boiled water of suction, is used to satisfy the demand of user to different water temperatures when water level is discontented; Transmission control unit (TCU) spare from cold water area to boiling water district water is a miniature immersible pump, is magnetic valve from the boiling water district to the transmission control unit (TCU) spare of warm water district water; Controller is controlled the work of whole water dispenser automatically.

Main control module: select for use programmable logic device (CPLD) to be used for formation, the output of collection, logical process and the control signal of all signals of system, realize each duty switching of water dispenser;

Messenger's detection module: utilize the optoelectronic switch collection whether to have the signal of people's process to be transferred to CPLD and carry out logic analysis;

The water level detecting module: the water level place that limits in each water tank inserts metal probe, utilizes the dividing potential drop of water and big resistance resistance, judges whether to specify water level; Each water tank is all exported two and is indicated the signal of high and low water level to give CPLD respectively;

Temperature detecting module: use the directly integrated temperature sensor chip DS18B20 of output digital quantity, communicate with CPLD and be met the temperature that needs precision;

Relay control module: CPLD control output high-low level amplifies through triode, and as the control signal of control relay, the 220V ac working power supply of control reservoir, boiler, immersible pump determines whether it works; In addition, also add relay in magnetic valve direct current 12V working power loop, whether the relay control signal that CPLD provides controls magnetic valve work after amplifying;

Human-computer interaction module: receive the control signal that comes from CPLD, by the sharp color LED visual display system of liquid crystal display work at present state; Feed back signal to CPLD initialization system duty by the plurality of keys on the panel.

In the described controller:

The water level detecting module: water level probe connects lead, and through electric resistance partial pressure and comparator LM339, comparator output connects the IO mouth of main control module CPLD, provides each water tank current water level signal to CPLD, represents the high and low water level signal of three water tanks respectively;

Temperature detecting module: numeric type sensor DS18B20 adopts the 1-Wire interface, and this data wire connects the I/O mouth of main control module CPLD, the real-time digital temperature data is provided for the CPLD chip;

Messenger's detection module: photoelectric sensor output signals is judged back output high-low level through comparator LM339, inserts main control module CPLD chip I mouth, and is close to have judged whether the people;

Relay control module: whether main control module CPLD waits information and default control logic to produce the control output signal according to water temperature, water level, the messenger of input, after triode amplifies as the control input signal of each relay of relay control module, the 220V ac working power supply and the magnetic valve 12V dc supply of control reservoir, boiler, immersible pump determine whether it works;

Human-computer interaction module: the color LED indicator lamp of vivid displays temperature directly links to each other with the I/O mouth of main control module CPLD, and actions such as demonstration, flicker, circulation are directly controlled by CPLD.All demonstration information of Liquid Crystal Module directly provide by the CPLD chip.The signal of input button is directly connected to the external I/O port of CPLD, and directly input signal gives CPLD as control signal.

The control logic of main control module CPLD is in the described controller:

Controller main control module CPLD input signal has: 1) unboiled water district, the thermal treatment zone and the high and low signal of heat preservation zone water level; 2) temperature feedback signal of the temperature detection chip DS18B20 of attemperater and boiler; 3) messenger's detection signal of messenger's detection module photoelectric sensor; 4) the Reset button on the user interactions panel, Force button, Smart button, SetDown button, SetUp push button signalling;

Output signal has: 1) heating water tank heating signal; 2) attemperater heating signal; 3) immersible pump control signal; 4) solenoid control signal; 5) liquid crystal display mode block control signal; 6) running lamp control signal;

The state machine theory is adopted in the control logic design of controller main control module CPLD, realized a multi-input multi-output system, according to system's operation characteristic, system running state is divided into 4 kinds: the state that reports an error, holding state, intelligent heat preserving state, pressure heated condition;

The state of reporting an error appears at system and occurs comprising: 1) detect the high water level signal and do not detect the low water level signal for same water tank under the wrong situation; 2) temperature detection shows long-time above 100 ℃.

Under the state of reporting an error, running lamp goes out entirely, immersible pump cuts out, the heating of closed electromagnetic valve, attemperater is closed, the heating water tank heating is closed, the liquid crystal display status bar shows error, and system jumps to the intelligent heat preserving state from error condition can only exchange Reset button on the panel by the user;

Holding state appears under the following situation, comprising: it is unmanned that 1) messenger's detection signal surpasses lasting expression in a hour; 2) three cistern water levels detections are low entirely;

Under holding state, running lamp goes out entirely, immersible pump cuts out, the heating of closed electromagnetic valve, attemperater is closed, the heating water tank heating is closed, the liquid crystal display status bar shows Hold, and system from the condition that holding state jumps to the intelligent heat preserving state is: 1) messenger's detection signal transition table is shown with people's signal; 2) add water in the unboiled water district and change three situations that water tank all is low water levels;

When forcing heated condition to appear at system to be in the intelligent heat preserving state, the user presses after the Force key;

Forcing under the heated condition, attemperater heats with all strength, the liquid crystal display status bar shows Force, and heating water tank, immersible pump and magnetic valve are all followed the working method under the intellectual status;

System from the condition that holding state jumps to the intelligent heat preserving state is: 1) user presses the Smart key on the lower panel; 2) temperature detection of attemperater arrives 80 ℃;

Except holding state, the state that reports an error, pressure heated condition, system all is in the intelligent heat preserving state;

The intelligent heat preserving state is divided into two kinds of mode of operations according to boiling water district water is whether boiled;

Mode of operation one: the boiling water district is boiled

Heating water tank does not heat:

The attemperater detected temperatures is higher than and maintains temperature that the user sets or heat preservation zone water level when low, and attemperater does not heat, if the attemperater detected temperatures is lower than user's design temperature and heat preservation zone water level when not being low, and the attemperater heating,

Running lamp is fixing to be shown, according to Heating Zone Temperature, the high more small cup of temperature number is many more,

Immersible pump closes,

Under the discontented situation of attemperater, open the magnetic valve water that heating water tank is boiled and add the warm water district, full or boiling water district water level is low up to warm water district water level,

When unboiled water district water level was low, system prompt added water, and the prompt column on the liquid crystal display shows " Add ",

Continue to keep this state 24 hours, system prompt changes water, and the prompt column on the liquid crystal display shows " Change ",

If boiling water district water level is low, then refresh boiled signal;

Mode of operation two: the boiling water district is not boiled

Continue heating when the heating water tank water level is not low,, provide boiled signal if the heating water tank temperature detection continues 30 seconds more than 95 ℃,

The attemperater detected temperatures is higher than and maintains temperature that the user sets or heat preservation zone water level when low, and attemperater does not heat; If the attemperater detected temperatures is lower than user's design temperature and heat preservation zone water level when not being low, the attemperater heating;

Running lamp rolls to glimmer and allows user's visual sense heating water tank in work, and according to Heating Zone Temperature, the high more small cup of temperature number is many more,

Magnetic valve closes,

Under the discontented situation of heating water tank, open the water suction heating water tank of immersible pump with the unboiled water district, full or the cold water area water level is low until heating water tank,

When unboiled water district water level was low, system prompt added water, and the prompt column on the liquid crystal display shows " Add ".

Beneficial effect:

1. realize satisfying different users's demand, can the regulated at will holding temperature.

At present, most of people between 18 ~ 45 ℃, and the water dispenser that most of family and office use cannot be set by the user holding temperature, can only obtain 100 ℃ boiling water, uses extremely inconvenient to the requirement of water temperature.The holding temperature scope can be set at 30 ~ 80 ℃ in our design for this reason, and stepping is 5 ℃, satisfies diversified insulation requirement.Make tea or coffee because 80 ℃ water temperature is the most suitable, under this temperature, can not influence nutritional labeling wherein.So the highest set water temperature that the user needs is 80 ℃.

2. realize to force heating, make people's under intelligent mode, also can obtain making tea water of temperature.

Common water dispenser can only repeat water boiled when the user need make tea, and data show 80 ℃ the most suitable the making tea or coffee of water temperature according to investigations, and can not influence nutritional labeling wherein under this temperature.So repeat boiledly to there is no need fully.We have set especially and have forced the heating button, make user's can obtain making tea water of temperature.

3. realize healthy drinking-water, only once boiled, avoid thousand boiling water.

Because of boiled for a long time or repeatedly in the boil water heavy metal composition such as involatile substance such as calcium, magnesium and content of nitrite very high.For a long time this water of drink can disturb people's gastrointestinal function, causes the body anoxic, situations such as dizzy, headache, nervous, uncomfortable in chest, nauseating, vomiting, stomachache, diarrhoea occur.Boiled zone and soak zones in our design are isolated the possibility of thoroughly having stopped to occur thousand boiling water fully.

4. long-time boiled water has been drunk, and water is changed in prompting.

Show that according to the science investigation the long-time boiled water that reaches 24 hours of putting for a long time can impact health.The water dispenser of the present invention's design can be changed water by automatically prompting user in boiled 24 hours at water, impelled the user to form the custom of healthy drinking-water.

5. energy-conservation, come the application of people detection.

The user long-term not near water dispenser in, water dispenser can change holding state automatically over to, energy savings is used.

Description of drawings

Fig. 1 is a water dispenser device structure schematic diagram.

Fig. 2 is the water dispenser hardware block diagram.

Fig. 3 is that the Controller for water dispenser functional module is divided schematic diagram.

Fig. 4 is a water dispenser control panel schematic diagram.

Fig. 5 is the workflow diagram that cold water area arrives boiling water district water pump.

Fig. 6 is the workflow diagram of boiling water district to warm water district water valve.

Fig. 7 is the workflow diagram of warm water district heating water tank.

Fig. 8 is total external circuit schematic diagram.

The specific embodiment

Whole water dispenser comprises that the water tank that three volumes are 1.2L constitutes with the pipeline that is connected these three water tanks.The purpose that adopts this three-tank structure is to satisfy the requirement of user to water temperature, keeps unboiled water to separate with boiling water.Wherein, first water tank is used to adorn the unboiled water that did not burn; Second water tank is used to boil water, and the unboiled water that directly will inject water tank in the use is boiled to 100 ℃, and next water filling is waited for regard to deenergization in boiled back; The 3rd water tank has heat insulation function, and has many grades of adjustable water-saving temp control system devices, and the boiled water of suction when water level is discontented is used to satisfy the demand of user to different water temperatures.Transmission control unit (TCU) spare from cold water area to boiling water district water is a miniature immersible pump, is magnetic valve from the boiling water district to the transmission control unit (TCU) spare of warm water district water.Equipment structure chart is seen accompanying drawing 1.

The health energy-saving drinking water machine Detection ﹠ Controling system of the present invention's design adopts modular design, and Module Division is seen accompanying drawing 3.

Main control module is high performance programmable logic device (CPLD), is used for formation, the output of collection, logical process and the control signal of all signals of system, realizes that the function of each duty of water dispenser is switched,

Whether messenger's detection module utilizes the optoelectronic switch collection to have the signal of people's process to be transferred to CPLD and carries out logic analysis.

Water level detecting module, each water tank all have two signals that detect high low water level and are transferred to CPLD.The method that the collection of water level signal is adopted is: the water level place that limits in water tank inserts metal probe, utilizes the dividing potential drop of water and big resistance resistance, judges whether to specify water level.

Temperature detecting module is used the directly integrated temperature sensor chip DS18B20 of output digital quantity, and the cost of this chip is not high, and the precision height, only needs to take an I/O port, communicates with CPLD and can be met the temperature that needs precision.

Main control module CPLD control running lamp and liquid crystal display realize that system mode shows.8 LED lamps of one row show the general temperature and the heated condition of the thermal treatment zone.Lamp flicker during heating, lamp stabilized illumination when not heating is given one of user impression intuitively.Liquid crystal display shows the temperature of current heat preservation zone and the temperature that the user sets, and the measure (add water, change water and normal) that shows the state (standby, mistake and normal) of current system and need the user to take.

Also be provided with Reset key, Force button, Smart button, SetDown button, SetUp button on the panel, realize artificial setting and intervention the water dispenser duty.Wherein: the state of Reset key zero clearing system, Force key force heating, Smart key to switch back intellectual status, the SetUp key improves design temperature, SetDown key reduction design temperature, and stepping is 5 ℃.

System is divided into 3 states such as operate as normal, fault, standby.During operate as normal, all are normal in system, and can be by state executable operations, display reminding; Under the holding state, have only when messenger's signal and water level signal and differentiate normal the time, the state of operate as normal can be got back to by system; Under the malfunction, have only reset can allow system get back to normal operating conditions.

The work-based logic of system is as follows:

(1) the boiling water district is once boiled with running water, does not heat then.

(2) under the insulation pattern, the warm water district will maintain the temperature that the user sets from the water in boiling water district.

(3) forcing under the heating mode, the warm water district will be heated rapidly to 80 ℃ from the water in boiling water district.

(4) under the situation of boiling water district sky, water in the unboiled water district adds the boiling water district, and is low or the boiling water district full up to the cold water area water level.

(5) under the discontented situation in warm water district, the water that the boiling water district is boiled adds the warm water district, and is full or boiling water district water level is low up to warm water district water level.

(6) when long-time nobody enters, can enter holding state.

(7) water level detecting is unusual, enters the standby state that reports an error.

(8) prompting adds water under the discontented situation in unboiled water district.

(9) boiling water of Shaoing has not been drunk for a long time, and water is changed in the prompting suggestion.

(1) health energy-saving drinking water machine hardware configuration

This health energy-saving drinking water machine is made up of main control module 1, relay module 2, water temperature detection module 3, messenger's detection module 4, water level detecting module 5, heating module 6, heat preservation module 7, LCD MODULE 8.Wherein, main control module 1 can receive the signal of water temperature detection module 3, messenger's detection module 4 and water level detecting module 5 as the foundation of carrying out next step operation.Direct control relay module 2 of main control module and LCD MODULE 8, whether the work of relay module decision heating module 6, heat preservation module 7 to be, realizes multiple operations such as heating, insulation or standby; LCD MODULE 8 control liquid crystal displays, instant duty and the signal language of real-time temperature, water dispenser in display setting holding temperature, the attemperater.Contact block diagram such as Fig. 3 of particular hardware.

1. main control module

Main control module is selected the PLD EPM1270T144C5N of altera corp for use, be used for formation, the output of collection, processing and the control signal of all signals of system, the function that realizes each logic state of water dispenser is switched, and certain processing speed is arranged, easy etc. with other module connecting interface.

2. relay control module

Relay control module is used HK3FF-DC12V-SH (T73) type relay.The primary standard that selective relay is considered is the contact current value.Because the 220V AC power is arranged in the peripheral circuit, relay must can bear enough big electric current, otherwise burns device easily.The contact current of HK3FF-DC12V-SH (T73) type relay is 10A, and maximum switch current is 15A, can satisfy the needs of application.

Consider the break-make that will utilize ' 0 ', ' 1 ' signal control relay that CPLD provides, and CPLD output ' 1 ' signal is 3.3V, output current is a few mA magnitudes.Through experiment measuring, drive current is about 20mA in the coil of HK3FF-DC12V-SH (T73) relay.Obviously, the undercurrent of CPLD output is to drive the break-make of relay, so select for use triode 2N3904 as amplifying device, its maximum collector currnt Ic (max) can reach 200mA, enough drives relay.

Consider to have in the output DC alternating component and disturb, between the base stage b of triode and emitter-base bandgap grading e, add an electric capacity (selecting the electric capacity of 0.1 μ F for use).In addition, if output can not guarantee the normal quiescent operation pressure drop of the 0.7V of triode be inter-stage, triode will not have amplification, then relay also can't operate as normal, so between the base stage of CPLD output and triode, added a diode, guaranteed that triode can be in the amplification region.

Add between CPLD output pin and diode that resistance is the resistance of 1K Ω, the voltage signal of CPLD being gone up output transfers current signal to, is convenient to next step this electric current is amplified to drive relay.

Break-make type relay utilizes electromagnetic induction effect to carry out work, if after disconnecting, very high inverse electromotive force may appear in the coil, can damage device, so the current potential height direction at the coil two ends of relay by induced electromotive force has added a forward diode IN4148 (inverse peak voltage 100V, forward voltage 1V), so that the release of direction electromotive force in the coil.

3. water temperature detection module

The water temperature detection module is selected the DS18B20 chip for use, and its volume is little, adopts 1 line system bus structures, and is flexibly economical.The scope of detected temperatures is between-55 ~ 125 ℃, and precision is 2-5 ℃.

In external circuits, only need to give the vdd terminal of DS18B20 and the GND end connects the 5V power supply respectively and ground connection gets final product, add to it at data output end and draw resistance (4.7K Ω) to be connected to the 5V power supply again, can guarantee the data serial transfer normally of exporting.Concrete transfer of data is directly followed between the DS18B20 by CPLD and is undertaken by the communications protocol regulation alternately.

4. messenger's detection module

Messenger's detection module utilizes the characteristic near switch: have the people to go out high level through out-of-date near the switch data line.Near the input as LM339 of the output signal of switch, the benchmark comparative voltage uses 5V with photoelectricity.Have man-hour LM339 to judge back output 5V, nobody is through out-of-date, and LM339 exports 0V.By the standard high-low level 5V that the comparative result of LM339 forms, 0V is as logical signal " 1 ", and " 0 " inserts CPLD for the usefulness that has judged whether the people.

5. water level detecting module

The water level detecting module utilizes wire as the water level detecting probe.If do not reach water level, the resistance approach infinity between two probes then, after water level probe was not had by water logging, the water conduction made the entire circuit conducting.Adopt the 12V power supply, and utilize the dividing potential drop between the divider resistance of water and selection, the magnitude of voltage of assigning to is input to the negative input end of LM339 (comparator), the output of LM339 is received on the CPLD, to reach the purpose of sensed water level.

Because pure water is a non-conductor, resistance value ratio is bigger, and the resistance of divider resistance also corresponding requirements is bigger.

In addition, the inner way of output of using the OC door of LM339 so when 4 output port output signals, all will connect the pull-up resistor of a 4.7K Ω earlier, and then is received 5V power supply place, prevents from that electric current from pouring in down a chimney to enter chip, and chip is caused damage.

6. heating module 6, heat preservation module 7

Heating module and heat preservation module use common electric heat water tank in order to add gentle insulation.

7. LCD MODULE 8

LCD MODULE is selected 2 * 16 character mode lcd display screen for use.CPLD analyzes according to all input signals, controls liquid crystal display then.But instant duty and the signal language of real-time temperature, water dispenser in liquid crystal display display setting holding temperature, the attemperater.

(2) fail-safe analysis of water dispenser control

1. water temperature detects the problem of error

Water temperature detection chip DS18B20 considers only to be placed on the outer wall of water tank for aspects such as health when settling, and the water temperature that outer wall records must have certain error with actual.Therefore, the temperature that DS18B20 collects can not directly be used, and need carry out the error process of fitting treatment.

In order to obtain temperature accurately, the detected temperature of DS18B20 is compared with directly detecting the temperature that obtains, obtain following table: (DS18B20 detect be Scan, true temperature is Real, unit is ℃)

Real	21	22	23	24	25	26	27	28	29	30	31	32	33	34	35	36	37
																		Scan	20	21	21	22	22	23	23	24	25	26	27	28	29	29	30	31	32
																		Real	38	39	40	41	42	43	44	45	46	47	48	49	50	51	52	53	54
Scan	33	34	34	35	36	37	37	38	39	40	41	42	43	44	44	45	46
Real	55	56	57	58	59	60	61	62	63	64	65	66	67	68	69	70	71
																		Scan	46	47	48	49	50	51	52	53	53	54	55	56	57	58	59	59	60
																		Real	72	73	74	75	76	77	78	79	80	81	82	83	84	85	86	87	88
Scan	61	62	63	64	65	65	66	67	68	68	69	70	70	71	72	73	74
Real	89	90	91	92	93	94	95	96	97	98	99
																		Scan	75	76	76	77	78	79	80	81	82	83	84

By last table test data, can get actual temperature and detected temperatures error curve, the analytical error curve can get: along with water temperature rises, actual water temperature and detection water temperature absolute error become big gradually.Need detections water temperature is done the function processing, allow its match actual water temperature.Very limited for its number that need decipher of temperature amount that only needs the integer level to handle, thus adopt direct decoding circuit to realize, both succinctly understandable, save logical block again.

2. the noise problem of water valve

The magnetic valve break-make has bigger noise when changing, and the control of the break-make of magnetic valve is directly related with water level detecting.The water level detecting scheme that adopts can surface tension and the water level fluctuation meeting owing to water allow high-water line fluctuation occur when the water surface just arrives high-water line, thereby it is disconnected to cause magnetic valve not stopped.So, consider under the state that magnetic valve is opened, the sensed water level state again that picks up counting to 30 seconds, water level is stable like this, has avoided the shake of magnetic valve.

But, may cause attemperater in high water level, in time not close like this and cause water to overflow.By repeatedly observing the water velocity of the valve of flowing through, find suitably to reduce the high-water line of attemperater, can guarantee that substantially water can not overflow.

3. about the rebound problem of holding state

Under the situation of holding state, if having the people to enter or add water after break the state of hold state before should getting back to.For addressing this problem, at first consider A: preserve previous state, under the situation that the hold state is removed, jump to that state.But, find not too big meaning of so a kind of preservation, because under most states, do not need to preserve previous state, the more important thing is that probably change has taken place situation when standby, the for example variation of water level, variation of temperature is not desirable way so get back to previous state merely.Change the consideration option b into: design a generic state, this state is to be used for differentiating present system specially should enter what state.In each state redirect, other states all jump to generic state like this, change the next state that jumps to by generic state again.Such design is based upon under such situation for the not high system of state redirect rate request, such design has simultaneously also solved the commentaries on classics of holding state and has jumped problem, being more preferably in system mode has under the situation of little mistake, still can jump to generic state soon, thereby choose correct state.

Claims (3)

1. a health energy-saving drinking water machine is characterized in that this water dispenser comprises three orders water tank that is connected in series and the pipeline that is connected these three water tanks and heat insulation function is arranged, and has many grades of adjustable water-saving temp control system devices; Wherein, first water tank (1) is a water inlet end, is used to adorn the unboiled water that did not burn; Second water tank (2) is used to boil water, and the unboiled water that directly will inject water tank in the use is boiled, and next water filling is waited for regard to deenergization in boiled back; Three-tank (3) is provided with delivery port, and heat insulation function is arranged, and has many grades of adjustable water-saving temp control system devices, with regard to the boiled water of suction, is used to satisfy the demand of user to different water temperatures when water level is discontented; Transmission control unit (TCU) spare from cold water area to boiling water district water is a miniature immersible pump, is magnetic valve from the boiling water district to the transmission control unit (TCU) spare of warm water district water; Heat insulation function is arranged, and have the work that many grades of adjustable water-saving temp control system devices are controlled whole water dispenser automatically;

Described controller comprises:

Main control module: select for use programmable logic device (CPLD) to be used for formation, the output of collection, logical process and the control signal of all signals of system, realize each duty switching of water dispenser;

Messenger's detection module: utilize the optoelectronic switch collection whether to have the signal of people's process to be transferred to CPLD and carry out logic analysis;

The water level detecting module: the water level place that limits in each water tank inserts metal probe, utilizes the dividing potential drop of water and big resistance resistance, judges whether to specify water level; Each water tank is all exported two and is indicated the signal of high and low water level to give CPLD respectively;

Water temperature detection module: use the directly integrated temperature sensor chip of output digital quantity, communicate with CPLD and be met the temperature that needs precision;

Relay control module: CPLD control output high-low level amplifies through triode, and as the control signal of control relay, the 220V ac working power supply of control reservoir, boiler, immersible pump determines whether it works; In addition, also add relay in magnetic valve direct current 12V working power loop, whether the relay control signal that CPLD provides controls magnetic valve work after amplifying;

Human-computer interaction module: receive the control signal that comes from CPLD, by liquid crystal display and color LED visual display system work at present state; Feed back signal to CPLD initialization system duty by the plurality of keys on the panel.

2. health energy-saving drinking water machine according to claim 1 is characterized in that in the described controller:

The water level detecting module: water level probe connects lead, and through electric resistance partial pressure and comparator LM339, comparator output connects the IO mouth of main control module CPLD, provides each water tank current water level signal to CPLD, represents the high and low water level signal of three water tanks respectively;

The water temperature detection module: numeric type temperature sensor DS18B20 adopts the 1-Wire interface, and this data wire connects the I/O mouth of main control module CPLD, the real-time digital temperature data is provided for the CPLD chip;

Messenger's detection module: photoelectric sensor output signals is judged back output high-low level through comparator LM339, inserts main control module CPLD chip I mouth, and is close to have judged whether the people;

Relay control module: whether information reaches default control logic generation control output signal to main control module CPLD according to the water temperature of importing, water level, messenger, after triode amplifies as the control input signal of each relay of relay control module, the 220V ac working power supply and the magnetic valve 12V dc supply of control reservoir, boiler, immersible pump determine whether it works;

Human-computer interaction module: the color LED indicator lamp of vivid displays temperature directly links to each other with the I/O mouth of main control module CPLD, and demonstration, flicker, do action are directly controlled by CPLD; All demonstration information of Liquid Crystal Module directly provide by the CPLD chip, and the signal of input button is directly connected to the external I/O port of CPLD, and directly input signal gives CPLD as control signal.

3. health energy-saving drinking water machine according to claim 1 and 2 is characterized in that the control logic of main control module CPLD in the described controller is:

Controller main control module CPLD input signal has: 1) unboiled water district, the thermal treatment zone and the high and low signal of heat preservation zone water level; 2) temperature feedback signal of the temperature detection chip DS18B20 of attemperater and boiler; 3) messenger's detection signal of messenger's detection module photoelectric sensor; 4) the Reset button on the user interactions panel, Force button, Smart button, SetDown button, SetUp push button signalling;

Output signal has: 1) heating water tank heating signal; 2) attemperater heating signal; 3) immersible pump control signal; 4) solenoid control signal; 5) liquid crystal display mode block control signal; 6) running lamp control signal;

The state machine theory is adopted in the control logic design of controller main control module CPLD, realized a multi-input multi-output system, according to system's operation characteristic, system running state is divided into 4 kinds: the state that reports an error, holding state, intelligent heat preserving state, pressure heated condition;

The state of reporting an error appears at system and occurs comprising: 1) detect the high water level signal and do not detect the low water level signal for same water tank under the wrong situation; 2) temperature detection shows long-time above 100 ℃;

Under the state of reporting an error, running lamp goes out entirely, immersible pump cuts out, the heating of closed electromagnetic valve, attemperater is closed, the heating water tank heating is closed, the liquid crystal display status bar shows error, and system jumps to the intelligent heat preserving state from error condition can only exchange Reset button on the panel by the user;

Holding state appears under the following situation, comprising: it is unmanned that 1) messenger's detection signal surpasses lasting expression in a hour; 2) three cistern water levels detections are low entirely;

Under holding state, running lamp goes out entirely, immersible pump cuts out, the heating of closed electromagnetic valve, attemperater is closed, the heating water tank heating is closed, the liquid crystal display status bar shows Hold, and system from the condition that holding state jumps to the intelligent heat preserving state is: 1) messenger's detection signal transition table is shown with people's signal; 2) add water in the unboiled water district and change three situations that water tank all is low water levels;

When forcing heated condition to appear at system to be in the intelligent heat preserving state, the user presses after the Force key;

Forcing under the heated condition, attemperater heats with all strength, the liquid crystal display status bar shows Force, and heating water tank, immersible pump and magnetic valve are all followed the working method under the intelligent heat preserving state;

System from the condition that holding state jumps to the intelligent heat preserving state is: 1) user presses the Smart key on the lower panel; 2) temperature detection of attemperater arrives 80 ℃;

Except holding state, the state that reports an error, pressure heated condition, system all is in the intelligent heat preserving state;

The intelligent heat preserving state is divided into two kinds of mode of operations according to boiling water district water is whether boiled;

Mode of operation one: the boiling water district is boiled

Heating water tank does not heat:

The attemperater detected temperatures is higher than and maintains temperature that the user sets or heat preservation zone water level when low, and attemperater does not heat, if the attemperater detected temperatures is lower than user's design temperature and heat preservation zone water level when not being low, and the attemperater heating,

Running lamp is fixing to be shown, according to Heating Zone Temperature, the high more small cup of temperature number is many more,

Immersible pump closes,

Under the discontented situation of attemperater, open the magnetic valve water that heating water tank is boiled and add the warm water district, full or boiling water district water level is low up to warm water district water level,

When unboiled water district water level was low, system prompt added water, and the prompt column on the liquid crystal display shows " Add ",

Continue to keep this state 24 hours, system prompt changes water, and the prompt column on the liquid crystal display shows " Change ",

If boiling water district water level is low, then refresh boiled signal;

Mode of operation two: the boiling water district is not boiled

Continue heating when the heating water tank water level is not low,, provide boiled signal if the heating water tank temperature detection continues 30 seconds more than 95 ℃,

The attemperater detected temperatures is higher than and maintains temperature that the user sets or heat preservation zone water level when low, and attemperater does not heat; If the attemperater detected temperatures is lower than user's design temperature and heat preservation zone water level when not being low, the attemperater heating;

Running lamp rolls to glimmer and allows user's visual sense heating water tank in work, and according to Heating Zone Temperature, the high more small cup of temperature number is many more,

Magnetic valve closes,

Under the discontented situation of heating water tank, open the water suction heating water tank of immersible pump with the unboiled water district, full or the cold water area water level is low until heating water tank,

When unboiled water district water level was low, system prompt added water, and the prompt column on the liquid crystal display shows " Add ".

Images